"Accepted" does not mean "approved." Apparently the IRS found something incorrect on your return. They will send you a letter explaining what the problem is.
https://ttlc.intuit.com/questions/2840013-does-accepted-mean-my-refund-is-approved
TurboTax does not get any information from the IRS after you file your tax return, so no one at TT knows why your refund was changed by the IRS.
You have not mentioned any specific amounts. Sometimes we can make an educated guess as to the reason for your reduced refund if you mention specific amounts--for example if your refund was short by $1400 per person---it is likely to be a mix up regarding the 3rd EIP payment. If it is short by $1800 or $1500 or a multiple of that amount --- maybe a mixup regarding the advance child tax credit payments.
The IRS will send you a letter that explains why your refund was reduced. Meanwhile it might help you to check your online IRS account.
https://www.irs.gov/payments/your-online-account
https://blog.turbotax.intuit.com/tax-refunds/why-is-my-tax-refund-not-what-i-expected-49240/
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
